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Ajouter le résultat dans votre panierMachinery & leather trades' engineers to the early 1880s : Part I / Trevor Lyons in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 4 (07-08/2011)
Titre : Machinery & leather trades' engineers to the early 1880s : Part I Type de document : texte imprimé Auteurs : Trevor Lyons, Auteur Année de publication : 2011 Article en page(s) : p. 139-146 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Appareils et matériels -- Histoire
Cuirs et peaux -- Industrie et commerce -- HistoireIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In an overview, from the earliest developments of mechanical aids, to sophisticated processing equipment, the rise of machinery within leather manufacture and the interaction of early leather trades' engineers is discussed. The importance of splitting machine development is emphasised as a precursor to the more general introduction of machinery within leather manufacture. Significant British, German and American leather trades' engineers are identified along with their contributions to machinery development. In Part II the impact of early American designed machinery and the principal role of leading British tanners in bringing patented machinery to the British market is also highlighted. Note de contenu : - Earliest mechanical developments
- The splitting machine
- Examples of other early machinery
- Leather trade machinery in continental Europe
- Specialised british leather trades' engineersEn ligne : https://drive.google.com/file/d/1Eb1JIp-H9wUYq4AJrj5Qy8Koadkd0T21/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11856
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 139-146[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013212 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Preparation and properties of a methacrylic acid-co-modified maleic anhydride/montmorillonite nanocomposite for tanning Type de document : texte imprimé Auteurs : Yan Bao, Auteur ; Jianzhong Ma, Auteur ; Zhang Jing, Auteur ; E. Tao, Auteur Année de publication : 2011 Article en page(s) : p. 147-151 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride maléique
Diffractométrie de rayons X
EthanolamineL'éthanolamine, également appelée 2-aminoéthanol ou monoéthanolamine, est un composé chimique organique qui est à la fois une amine primaire (par son groupe amine) et un alcool primaire (par son groupe hydroxyle). À l'instar des autres amines, la monoéthanolamine se comporte en base faible. L'éthanolamine est un liquide toxique, inflammable, corrosif, incolore et visqueux ; son odeur est similaire à celle de l'ammoniac.
Matériaux hybrides
Méthacrylique, AcideL'histoire de l'acide méthacrylique commence en 1865, année où il est synthétisé pour la première fois à partir du méthacrylate d'éthyle.
L'acide méthacrylique est très réactif avec les groupes carboxyles, vinyles et esters.
Microscopie électronique en transmission
Montmorillonite
Persulfate de potassium
Polyaddition
Résistance à l'humidité
Résistance thermique
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Methacrylic acid-co-modified anhydride/montmonrillonite (MAA-co-modified MA/MMT) nanocomposite was prepared via the free radical copolymerization of methacrylic acid and maleic anhydride in the presence of montmorillonite, in which maleic anhydride and montmorillonite were modified respectively by ethanolamine and the initiator (potassium persulfate). The influence of maleic anhydride modifier, the mass ration of MAA to MA and modified MMT contents on the application properties of nanocomposite was investigated.
The wet-heat resistance stability and the fullness of leather tanned by nanocomposite were improved with the increase of hydroxyl group of ethanolamine. The introduction of modified MA and modified MMT resulted in increase and then decrease of the wet-heat resistance stability and the fullness of leather. X-ray diffraction (XRD) and Transmission Electron Microscope (TEM) confirmed MAA-co-modified MA/MMT nanocomposite is categorized as exfoliated and intercalated one.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of MAA-co-modified MA/MMT nanocomposite (see appendix for details) - Characterization of MAA-co-modified MA/MMT nanocomposite - Application of MAA-co-modified MA/MMT nanocomposite leather sampels.
- RESULTS AND DISCUSSION : Effect of maleic anhydride modifier -Effect of the mass ration of MAA to MA - Effect of modified MMT contents - The structure of MAA-co-modifed MA/MMT nanocompositeEn ligne : https://drive.google.com/file/d/17jvN5Q8x52orzKyQQbGiOLQOLVyOknE1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11857
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 147-151[article]Réservation
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Titre : A sensitive voltammetric method for chromium (VI) in presence of chromium (III) and its application to leather Type de document : texte imprimé Auteurs : Deniz Arslan Kalender, Auteur ; Berrin Yenigül, Auteur ; F. Nil Ertas, Auteur Année de publication : 2011 Article en page(s) : p. 152-157 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir -- Teneur en chrome hexavalent
Cuirs et peaux -- Analyse
VoltampérométrieIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The presence of chromium (VI) in leather is a subject of considerable interest in the tannery sector. Cr(VI) is usually controlled by standard spectrophotometric methods that utilize 1:5 diphenyl carbazide. However, the detection limit of this method is around the prohibited limit of Cr(Vi) set for most of the leather products, being 2mgkg-1. Present study describes the catalytic cathodic adsoprtive tripping voltametric method for Cr(VI) determination in the presence of Cr(VI) determination in the presence of Cr(III). The Cr(VI) content of leather samples was extracted according to the IUC 18 standard method and it was reduced to Cr(III) in the presence of diethylenetriaminepentaacetic acid (DTPA) on a hanging mercury drop electrode (HMDE) at -0.90V. The catalytic effect of nitrate ions on the reduction peak of DTPA-Cr (III) complex was exploited for Cr(VI) analysis at sub-ppb level. Ion exchange resins were used to eliminate the interference of Cr (III) ions and their efficiency for removal was examined by ICP-OES. The voltammetric method was proved to be sensitive for Cr(VI) determination in leather samples in the presence of Cr (III). En ligne : https://drive.google.com/file/d/1OJMUL3ywlO3gRsPfbK4kQX2Pnlb9ghPQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11858
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 152-157[article]Réservation
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Titre : Preparation of lignosulfonate reduced chrome tanning agent and its tanning effect Type de document : texte imprimé Auteurs : Peng Zhou, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2011 Article en page(s) : p. 158-164 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chrome hexavalent
Lignosulfonate
Réduction (chimie)
Tannage au chrome
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Lignosulfate (LGS) is a major by-product of pulping industry, generated in a huge amount each year. In this research, LGS was used as a reducing agent to reduce Cr (VI) to Cr (III) so that the LGS reduced chrome tanning agent (Cr-LGS) was prepared. It was found that the optimal mass ration of LGS, dichromate and concentrated sulphuric acid was 0.7:1.0:1.0 for the preparation reaction. The LGS was degraded during the reaction while some functional groups, such as carboxyl, were derived. These structural changes in LGS made the Cr-LGS exhibit a satisfactory self-making effect and thus possess good alkali resistance. Tanning experiments indicated that Cr-LGS achieved a high shrinkage temperature for wet-blue (Ts=118°C, Cr2O3 offer=1.5 %). Compared with the leather tanned by commercial chrome tanning agent, the Cr-LGS tanned leather exhibited greater tensile and tear strengths with improved fullness and tightness. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Methods - Characterization of Cr-LGS - Tanning trials and evaluation of wet-blue leather - Scanning electron microscope analysis - Strength determination of crust leather.
-RESULTS AND DISCUSSION : Effect of mass ratio of LGS/dichromate on property of tanning liquor - The change of LGS structure after reaction and its effect on tanning properties - General evaluation of wet-blue leather - Mechanical properties of crust leather.En ligne : https://drive.google.com/file/d/1hcN-Gfz-oLaWfVVfKn7yfbz4IPYv3V-O/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11859
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 158-164[article]Réservation
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Titre : A novel oxazolidine tanning agent and its use in vegetable combination tanning Type de document : texte imprimé Auteurs : Jing Li, Auteur ; Sun Qingyong, Auteur ; Chao Wu, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2011 Article en page(s) : p. 165-170 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Mimosa et constituants
Oxazolidine
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique
Tannage organique
Tannage végétalIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Combination tanning using vegetable tannins and oxazolidine E has been proved to be preferred alternative to chrome tanning. But this kind of tannage has not been widely applied partly owing to the high price of oxazolidine E. In this study, a new oxazolidine tanning agent, Oxazolidine SCU, was synthesized by using cheap and readily obtained raw materials, and its tanning properties both alone and in combination with vegetable tannins, were investigated. Oxazolidine SCU possesses high reactivity with skin collagen. Tanned by 5 % oxazolidine SCU under room temperature at pH8.0, the shrinkage temperature of goatskin leather was around 83°C. In vegetable combination tanning, oxazolidine SCU exhibited a good synergistic tanning effect with condensed tannins. Among condensed tannins, mimosa is the preferred one in consideration of achieving high shrinkage temperature of leather. Tanning the depickled pelt with 10-15 % vegetable tannin at first, and then retanning with 4-6 % oxazolidine SCU for 4 hours at 60°C in the pH range 5.5-6.0, the shrinkage temperature of leather was 114-120°C. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials and instruments - Effect of tanning conditions on vegetable tannin-oxazolidine SCU combination tanning - Shrinkage temperature determination
- RESULTS AND DISCUSSION : Hydrolysis of oxazolidine SCU - Effect of tanning conditions on tanning property of oxazolidine SCU - Effect of tanning conditions on vegetable tannin-oxazolidine SCU combination tanningEn ligne : https://drive.google.com/file/d/1MQ9SW_udQTqwBWd5mGhdxqHM1IVNomnb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11860
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 165-170[article]Réservation
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Titre : The renaissance of Fe(III) as self-tanning agent Type de document : texte imprimé Auteurs : R. Karthikeyan, Auteur ; R. Ramesh, Auteur ; R. Venba, Auteur ; Usha Ramamoorthy, Auteur ; Chandra Babu Narasimhan Kannan, Auteur Année de publication : 2011 Article en page(s) : p. 171-176 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acides gras
Couleur -- Analyse
Fer trivalent
Microscopie électronique à balayage
Polycarboxylates
TannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Iron tanning is considered an alternative due to close similarity between the aqueous chemistry of Cr(III) and Fe(III). This arises primarily from the hydrolitic behaviour of Fe(III) complexes. An attempt has been made in the present study to improve the stability of Fe(III) comple by chelation with suitable ligand in order to increase the shrinkage temperature of the leather. An Fe(III) based tanning system which involves a treatment with a fatty acid and a polycarboxylate has been standardized to produce leather with shrinkage temperature (Ts)>100°C. Scanning electron microscopy on the tanned leathers was used to study the structural characteristics of leathers produced. A comparative colour analysis was studied against standard chrome leather to reveal the dyeing and colour characteristics of the proposed tanning system. The excess neutral salt used in the developed process has the tendency to reduce the acidity of the metal ion, which produces iron-tanned leather with strength properties comparable to those of chrome-tanned leather. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Standardization of Fe(III) based self-tanning method - Determination of shrinkage temperature - Determination of Fe(III) in spent tan liquors - Wet finishing for the leathers - Scanning electron microscopy - Physical testing and visual assessment - Colour measurement.
- RESULTS AND DISCUSSION : Standardization of Fe(III) based self-tanning - Structural characterization of iron tanned leather - Physical testing and visual assessment data - Colour characteristics.En ligne : https://drive.google.com/file/d/1f7HyKj30Xc_nrwppK8EAztYFe7bWT64Q/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11861
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 4 (07-08/2011) . - p. 171-176[article]Réservation
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| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 013212 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
